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Playlist AP® Physics 2: Fields in Space 10 videos
AP Physics 2: Fields in Space Drill 1, Problem 1. Which diagram correctly illustrates the magnetic field around the bar magnet?
AP Physics 2: 1.2 Fields in Space. What is the magnitude and direction of magnetic field BA at point A?
AP Physics 2: 1.3 Fields in Space. How long will it take PANCAKE to reach the plate?
AP Physics 2: 1.4 Fields in Space 172 Views
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Description:
AP Physics 2: Fields in Space Drill 1, Problem 4. What is the electric field magnitude at a distance 3X away from the center of the sphere?
Transcript
- 00:00
Thank you we sneak and here's your shmoop du jour
- 00:05
brought to you by electric fields Our bodies generate electric
- 00:08
fields constantly even when we sleep but we still can't
- 00:12
shoot lightning bolts out of our fingers aren't the magnitude
- 00:15
of an electric field caused by a spiritually charged object
Full Transcript
- 00:19
is e at a distance x away from the centre
- 00:22
of the sphere what's the electric field magnitude at a
- 00:26
distance three x away from the centre of the sphere
- 00:29
and hear the potential answer for me Okay well there's
- 00:33
a relationship between electric fields and distance The intensity of
- 00:39
an electric field at a point in space is proportional
- 00:42
to the inverse square of the distance From the point
- 00:45
to the center of the electric field source say we've
- 00:50
gotten electric field going and we put our cat at
- 00:53
a distance x away from the source The intensity of
- 00:56
the electric field he experiences is expressed as one over
- 01:00
x squared if we then move mr whiskers so he's
- 01:04
twice the distance away from the source thie intensity he
- 01:08
experiences from the field is now one over to next
- 01:12
square which means that at twice the distance the intensity
- 01:16
is one quarter the strength on at three times the
- 01:19
distance intensity would be one ninth is strong So in
- 01:24
this question the correct answer is a Oh and don't
- 01:27
worry about our cat In this scenario cats give off
- 01:30
their own electric fields Plus mr whiskers is kind of 00:01:33.399 --> [endTime] a jerk who never wants to cuddle
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